61763985 has 16 divisors (see below), whose sum is σ = 109802880. Its totient is φ = 32940720.

The previous prime is 61763981. The next prime is 61763987. The reversal of 61763985 is 58936716.

It is a happy number.

61763985 is a `hidden beast` number, since 6 + 1 + 7 + 639 + 8 + 5 = 666.

It is not a de Polignac number, because 61763985 - 2² = 61763981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61763985.

It is not an unprimeable number, because it can be changed into a prime (61763981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228621 + ... + 228890.

It is an arithmetic number, because the mean of its divisors is an integer number (6862680).

Almost surely, 2^61763985 is an apocalyptic number.

It is an amenable number.

61763985 is a deficient number, since it is larger than the sum of its proper divisors (48038895).

61763985 is a wasteful number, since it uses less digits than its factorization.

61763985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457525 (or 457519 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61763985 is about 7859.0066166151. The cubic root of 61763985 is about 395.2863063409.

The spelling of 61763985 in words is "sixty-one million, seven hundred sixty-three thousand, nine hundred eighty-five".